Peroxidase isozyme as marker for bacterial wilt resistance in tomato (Lycopersicon esculentum Mill.)

Peroxidase isozyme as marker for bacterial wilt resistance in tomato (Lycopersicon esculentum Mill.)

2000

A:PS

Twenty-four genotypes of tomato with varying levels of resistance to bacterial wilt caused by Ralstonia solanacearum were tested in a field experiment conducted in Thrissur, Kerala, India from August to March 1999. Root and leaf samples from 45- and 60-day-old plants from these genotypes were used to assay the banding pattern of peroxidase (PRX) isoenzyme using PAGE (Poly Acrylamide Gel Electrophoresis). The zymograms indicated the possibility of using PRX-7 (Rm = 0.361) and PRX-8 (Rm = 0.381) in 45-day-old leaf samples and PRX-5 (Rm = 0.297) in 60-day-old leaf samples as markers for resistant and moderately resistant varieties of tomato.

v.27(2):136-141, VEGETABLE SCIENCE

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